Safety device for carding-machines.



v o. L. OWEN. SAFETY DEVICE FOR GARDING MACHINES.

APPLIOATION FILED 0GT.1,190B.

Patented 0015.6,1914.

3 SHEETSSHEET 1.

In: mvKK| run-ma w. PHOTO-LITHO.. WASHINGMTOAL u. t.

0. L. OWEN.

SAFETY DEVICE FOR OARDING MACHINES.

APPLICATION FILED OUT. 1, 1908.

1,}, 12,829., Patented 0ct'.6,1914.

3 SHETSSHEET 2.

Inventor:

ttj s.

THE NorRls PETERS 60., PHOTO-LITHQ, WASHINGTON. D. C.

0. L. OWEN. $AFETY DEVICE FOR GARDING MACHINES.

APPLICATION FILED OGIKI, 1908. 1,1 12,829. Patented Oct. 6, 1914.

- 3 SHEETS-SHEET 3:

Inventor Artj s.

THE NORRIS F'ETERS 20.. PHOTO-LITHO.. WASHINGTONv D. C.

To all whom it may. concern UNITED STATES rATENT orriorj.

oscnn L. OWEN, or wnrrnvsvrrmn, MASSACHUSETTS, ASSIGNORTO THE WHITINMACHINE WORKS, or wmrmsvrrrn, MASSACHUSETTS, A CORPORATION or MAS-SACHUSETTS.

Be it known that I, OSCAR L. OWEN, a citizen of'the United States,residing at VVhitinsville, in the "county of Worcester and Commonwealthof Massachusetts, have invented certain new and useful Improvements inSafety Devices for Carding-Machines, of whichthe following is a full,true, and concise specification.

The invention is a safety device for controlling the cylinder doors ofcarding machines, and more particularly consists of the organization ofmeans hereinafter described for interlocking the said door with thepower-controlling device, whereby the door is locked shut while thepower is on and the power is held off so long as the door is. open,thereby guarding against injury both to the machine and the operator.

The invention further includes means,

combined with the foregoingpwhereby the power may be turned partially onwhile the door is open, but under restricted conditlons, so as to enablethe carding cylinder to receive a suitable motion wh le the stripping orgrinding attachment is operating thereon through the opendoorway.

These and further features of construction and operation constitutingthe present invention, will appear from the description which follows,and are pointed out in the accompanying claims. p t 1 Referring to thedrawings forming a part hereof, Figure 1 illustrates a form of myinvention in side elevation, and so much of a carding machine asi'sdirectly related thereto; Fig. 2 is a top plan of the same parts; Fig. 3is an end elevation thereof; Fig. 4 is an enlarged detail in sideelevation of the interlocking members; Fig. 5 a similar detail in endelevation, parts being in section; Fig. 6- is a detail in plan of sameparts, in their door-blocking position; and Fig. 7 is a sectional detailthrough the blocking sleeve.

is designated 1 and its oylinder-door'2 is located, as usual, in thefront wall thereof adjacent to the'oasing 1 of the dofling cylnot closedbefore the machine is again set I I Specification of Letters Patent.

Application filed October 1, 1908.

The main casing'ofthe carding machine Patented Oct. 6, 1914. Serial No.455,761.

to work, the strippings falling from the flats, shown at 3, willaccumulate on top of it, where-they will be likely to fall through theopening and injurev the carding cylinder, or,

'ifthey' do not fallinto'the opening, they are then'likely to concealit, so that the operator may inadvertently thrust his hand into therevolving cylinder, when he attempts to remove them. My invention aimsto remove the danger from this cause by connecting or correlating thesaid door orfany similar protecting covering of- ;moving partswith thedevice which controls the driving power of the machine, first, so astoprevent the operation or complete operation, of said device while thedoor is .open, and, second, after it has been operated, to prevent theopening of the door, so that at no time will it be possible for themachine to be left running with the protecting-door open. To this end,the said door is provided with a lateral pin-4, which through theconnecting-rod 5, operates a blocking-member 6, at the side of themachine.'- As herein shown, the blocking member -,is a lever of thefirst class, fulcrumed ona depending partof a bracket 7 and having alaterally enlarged head 6. i

The bracket 7 is secured to thecard-a-rch, as shown, and the lever islongitudinally off-set so that its head will be outside the verticalplane of said arch while its lower extremity will be in line with thepin 4; and connecting-rod 5. In the position to which the lever is-moved by openingithe door, which'is shown by Fig. 6 and by the dottedlines-of Fig. 4,its head 6 assumes a position, as an abutment, directlyin the path of movement of the power-controlling device or some part ormember geared to or moving with 1t. 7 v

I The power-controlling device may, Within the sccpe'of this invention,consist of any suitable means for' turning off and on the drivingpowerof the machine, being preferably also of akind that is adapted foran intermediate setting. for the purpose of-driving the machine at lessthan fullspe'ed. Specifically, such a device is a belt shipper,cooperating in the usual manner with the fast and loose pulleys (8 and9) on the shaft of the carding cylinder, and includes a shipper forkandsupport 10 therefor which is adapted for movementalong the'horizontalslideway llwhich projects laterally from the bracket 7 above referredto. Movement is imparted a half turn of the shaft shifts the beltcompletely from one pulley to the other, while a quarter turn or less'w-i llshift the belt 'to I a middle position, wherein the machine willbe driven at less than full speed on account-- Fig. 5, or until it hasshifted ,the'belt partly of the slippage.

The control shaft Ben-tends parallel with. the card arch and carrieshand-wheels 1&1 at its ends, one of the hand-wheels being adj av cent tothe stripping door, At an intermediate point' the said shaft carries alateral projection "or arm 15, which is the member,

above refer-red to, of the power-controlling device that is blocked bythe head of the lever 6. This abutting member normally revolves a halfrevolution, as above stated, when the power is turned full on, but whenI the door is open and the-abutment formed by the lever "6 is in itsblocking position, the

abutting memberencounters it as indicated in Fig. 6, so that theturningon of the power is thereby arrested. The blocking action thusestablished, however, is not intended to be positive, except as to thefull belt shipping movement of the shaft, and the parts are arranged sothat a preliminary or partial ro- I tation of the control shaft may takeplace,- in the direction "of turning on the power, not I withstandingthe conditionof the door a nd the position ofits operated lever 6. Thispreliminary or partial movement is permitted in order to enable thepower to be turned partially on, so that the carding cylinder may beslowly revolved while the grinding or stripping operation is going on.

The grinding or stripp'ing apparatus is in j the nature of anattachment, not herein, shown, but adapted to be supported in thebrackets 16 (F 1) where it can work on'the carding cylinder through theopen door, in

the usual manner, and it isintended to be driven by'a belt running inthelgrooved pulley 17 on the loose pulley 9. This pulley is driven bypartial engagement with the driving belt when the control shaft is inits slow speed position. It is preferred that this initial movement ofthe control shaft to its slow speed setting shall take place againstsome; resistance, though this is not essential, and; for this purposeone ofthe 'two engaging parts is made to yield resiliently tothe other.In the form herein illustrated, the said arm.

15 is made the yielding member, and the manner of its-support for thispurpose is as by or. formed as a part of a rotatable sleeve 18 which iscarried by the control shaft be tween two fixed collars 19 and 20thereon.

followsz The said arm is "carried The sleeve is provided with a keywaythat is engaged by a complementary lug 21 on the collar 19, the keywaybeing o-fsuliicient arcuate length to permit about a quarter rotation ofthesleev'e on the shaft. A spring 22, connected to the sleeve and theother collar 20, tends to urge the former'and its arm" 15 toward theblocking lever 6, the position shown by Fig. 7, so that the said arm mayyield relatively to the shaft after engaging the blocking lever, toallow the rock-shaft to turn for about .a'quarter turn, as shown in ontothe fast pulley, whereupon thepositive engagement of the lug 21 with theend of its keyway prohibits further-movement. In this position thecontrol shaft must. beheld by theoperator against the tension of thespring and the latter may, if desired, be made strong-enough to restorethebelt to the loose pulley when released.

By shutting the door and thereby replacing the lever 6 to its full lineposition of Fig. 4, the rock-shaft may obviously be rocked its completeha'lf-t urn and the power thereby turned full on. For the purpose ofthen locking the door against opening, the power device is likewiseprovided with a blocking or abutted member which is moved by the controlshaft into a position in the. path of one of the door-operated members,such as the lever 6. This blocking orabutted member, shown at 23, isconveniently formed as a part pro ecting fromthe sleeve 18 ,at a

right angle to the arm 15., being located so that it can move into thespacejust behind the lever 6, when the cylinder door is closed.

This position is indicated by the dotted lines of Fig 5, the member 23not being affected by-therotary yielding action of'the sleeve, since itis only adapt-ed to resist movement of the said lever in arearwarddirection, longitudinally of the shaft. 1

It will be observed that in the above described embodiment of myinvention, the lever 6 and the sleeve 18, with its two proj ecting arms15 and 28, constitute mutually interlocking abuttting and abutmentmembers, each adapted to control or block the other, in theiralternatespo'sitions, but it is to be understood that the invention isnot limitedto this construction or arrangement, and that separateinstrumentalities can be provided forthe respective blocking actions.within the scope of the following claims.

Having described my invention, what I claim and desire tose'curebyUnited States Letters Patent, is: v H I 1 1. In a carding machine, apower-controlling device comprising a manually operated rock-shaft,having an abutment member,

the same andsaid abutment member, in com bination with a card cylinderdoor provided 1 with a corresponding abutment member co-v operating withsaid first mentioned abut ment member to obstruct rotational move mentthereof against the tensionv of said spring.

8. In a carding machine, a power-control-,

ling device comprising a manually-operated rock-shaft having an abutmentmember capable of rotational movement thereon, and a spring between saidabutment member and rock-shaft to urge the same toward one extreme ofits relative rotary movement, in combination with a card cylinder doorprovided with a corresponding abutment mem-' her cooperating with saidfirst mentioned abutment member to block opening of the door in oneposition and to ermit partial rotation of the rock-shaft against thespring when in its other position.

4. In a carding machine, a power-controlling device comprising amanually operated rock-shaft, two collars thereon, an abutment memberbetween said collars adapted for relative rotary motion upon therock-shaft and a spring between said abutment member and one of thecollars adapted to urge said member to one extreme of its rotarymovement, in combination with a card cylinder door provided with acorresponding abutment member cooperating with said first I rotaryabutment member to block opening of the door in one position and topermit partial rotation of the rock-shaft against the spring when in itsother position In testimony whereof, I have signed my name to thespecification in the presence of two subscribing witnesses.

' OSCAR L. OWEN. Witnesses I ROBERT L. METCALF, BYRON L. MOORE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

